Brown University tn3270 3.1.1

tn3270 allows a Macintosh computer with a TCP/IP network connection to emulate an IBM 3270 terminal. Features of the emulation include color, extended highlighting, APL/TEXT character set support, and both standard and custom screen sizes. tn3270 also supports file transfer as part of a terminal session when IBM VM/CMS is being used on the host computer.

Although primarily a 3270 emulation program, tn3270 also supports line mode telnet connections. This support allows tn3270 to operate with hosts which establish a line mode connection before entering 3270 mode, as well as with line mode only (regular telnet) hosts. When operating in line mode, tn3270 emulates a DEC VT52 terminal.